The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Mar. 01, 2017
Infineon Technologies Ag, Neubiberg, DE;
Maurizio Galvano, Padua, IT;
Adolfo De Cicco, Castel d'Azzano, IT;
Roberto Penzo, Vigonza, IT;
Enrico Tonazzo, Villanova di Camposampiero, IT;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An example method for preventing overcurrent in light-emitting diode (LED) chains comprises deactivating a current regulation control loop connected to a plurality of LED chains; regulating, via a voltage regulation control loop, a forward voltage of the plurality of LED chains; upon determining that a forward voltage of the plurality of LED chains is equal to a target operating voltage for a subset of the plurality of LED chains, bypassing at least one of the plurality of LED chains such that only the subset of the plurality of LED chains is connected to the current regulation control loop; and upon determining that an output current of the subset of the plurality of LED chains is equal to a target operating current for the subset of the plurality of LED chains: deactivating the voltage regulation control loop; and activating the current regulation control loop.